234 BULLETIN 7*72, U. S. DEPARTMENT OF AGRICULTURE. 



depression a tuft of woolly hairs, the palea concave below, gibbous 

 above, the apex often free at maturity. 



FIG. 141. Panicum geminatum. Plant, X i ; two views of spikelet and fertile floret 



X 10. 



Large branching perennials, with woody culms often clambering 

 several feet high into shrubs or trees, the blades firm, flat, usually 



